This post is dedicated to Fred Gilham whose paper inspired this idea. When you look at a painting, it can take a moment to determine its centerpiece. In this 1851 work by Emmanuel Leutze, it’s pretty clear. The centerpiece is not the boat or the river of ice. It’s not the men rowing or the guy holding the flag. It’s not the guy holding his hat or the guy steering the boat. It’s the man standing in the center, rising up higher and straighter than anyone else. George Washington. He is the center of the picture. He makes up only a small portion of the surface area of the painting. But the picture would not be meaningful without him. He’s the one who made the decision to cross the Delaware River in the middle of the night in order to surprise the Hessian army (artistic license made it a daytime crossing). He’s the one who led his exhausted troops through the freezing cold on that Christmas evening in 1776. The credit for victory in the Battle of Trenton goes to him. All the elements of...